Winged_Wheel88
ND 14 UM 45
As I read it, the rule prohibits catchers from getting in the baseline without the ball, and runners from exiting the baseline to make contact with the catcher.
Catchers, though lightly padded, are at greater risk in these collisions in general, though. They are often in a more awkward and less athletic position because they have to field the ball prior to administering the tag, and are starting at a standstill in contrast to the runner who is moving at full speed. This means most of the energy of the collision is being transferred to the catcher, which puts him at a greater injury risk than the base runner.
This rule is fine with me. Most of the time, a good slide is a more effective method of reaching home safely than colliding with the catcher anyway, and it prevents the catcher from interfering with the baserunner without the ball, which was always illegal at every other base anyway.
IF that's what the rule says, then I'm fine with it. Though the way it's worded has a lot of people scratching their heads.